<template>
  <div id="aCoursesList" class="bg-fa of">
    <!-- /课程列表 开始 -->
    <section class="container">
      <header class="comm-title">
        <h2 class="fl tac">
          <span class="c-333">全部课程</span>
        </h2>
      </header>
      <section class="c-sort-box">
        <section class="c-s-dl">
          <dl>
            <dt>
              <span class="c-999 fsize14">课程类别</span>
            </dt>
            <dd class="c-s-dl-li">
              <ul class="clearfix">
                <li>
                  <a title="全部" :class="!searchObj.subjectParentId || searchObj.subjectParentId==''?'current bg-orange c-fff2':''" @click="getCoursePageVo()" href="#">全部</a>
                </li>
                <li v-for='subject in subjectNestedList' :key='subject.id'>
                  <a :class="searchObj.subjectParentId==subject.id?'current bg-orange c-fff2':''" :title="subject.title" @click="getTwoByOneId(subject.id)" href="#">{{subject.title}}</a>
                </li>
              </ul>
            </dd>
          </dl>
          <dl>
            <dt>
              <span class="c-999 fsize14"></span>
            </dt>
            <dd class="c-s-dl-li">
              <ul class="clearfix">
                <li v-for='subject in subSubjectList' :key='subject.id'>
                  <a :class="searchObj.subjectId==subject.id?'current bg-orange c-fff2':''" :title="subject.title" @click='getCourseByTwoId(subject.id)' href="#">{{subject.title}}</a>
                </li>
              </ul>
            </dd>
          </dl>
          <div class="clear"></div>
        </section>
        <div class="js-wrap">
          <section class="fr">
            <span class="c-ccc">
              <i class="c-master f-fM">1</i>/
              <i class="c-666 f-fM">1</i>
            </span>
          </section>
          <section class="fl">
            <ol class="js-tap clearfix">
              <li :class="this.buyCountSort=='1'?'current bg-orange':''">
                <a title="关注度" @click='sortBuyCount()' href="#">关注度&nbsp;
                  <span v-if="this.buyCountSort=='1'">↓</span>
                </a>
              </li>
              <li :class="this.gmtCreateSort=='1'?'current bg-orange':''">
                <a title="最新" @click='sortGmtCreate()' href="#">最新&nbsp;
                  <span v-if="this.gmtCreateSort=='1'">↓</span>
                </a>
              </li>
              <li :class="this.priceSort=='1'?'current bg-orange':''">
                <a title="价格" @click='sortPrice()' href="#">价格&nbsp;
                  <span v-if="this.priceSort=='1'">↓</span>
                </a>
              </li>
            </ol>
          </section>
        </div>
        <div class="mt40">
          <!-- /无数据提示 开始-->
          <section class="no-data-wrap" v-if='data.total==0'>
            <em class="icon30 no-data-ico">&nbsp;</em>
            <span class="c-666 fsize14 ml10 vam">没有相关数据，小编正在努力整理中...</span>
          </section>
          <!-- /无数据提示 结束-->
          <article class="comm-course-list" v-else>
            <ul class="of" id="bna">
              <li v-for='course in data.items' :key='course.id'>
                <div class="cc-l-wrap">
                  <section class="course-img">
                    <img :src="course.cover" class="img-responsive" :alt="course.title">
                    <div class="cc-mask">
                      <a :href="'/course/'+course.id" title="开始学习" class="comm-btn c-btn-1">开始学习</a>
                    </div>
                  </section>
                  <h3 class="hLh30 txtOf mt10">
                    <a :href="'/course/'+course.id" :title="course.title" class="course-title fsize18 c-333">{{course.title}}</a>
                  </h3>
                  <section class="mt10 hLh20 of">
                    <span class="fr jgTag bg-green" v-if='Number(course.price) === 0'>
                      <i class="c-fff fsize12 f-fA">免费</i>
                    </span>
                    <span class="fr jgTag bg-green" v-else>
                      <i class="c-fff fsize12 f-fA">￥{{course.price}}</i>
                    </span>
                    <span class="fl jgAttr c-ccc f-fA">
                      <i class="c-999 f-fA">{{course.buyCount}}人学习</i>
                      |
                      <i class="c-999 f-fA">{{course.viewCount}}评论</i>
                    </span>
                  </section>
                </div>
              </li>
            </ul>
            <div class="clear"></div>
          </article>
        </div>
        <!-- 公共分页 开始 -->
        <div>
          <div class="paging">
            <a
              :class="{undisable: !data.hasPrevious}"
              href="#"
              title="首页"
              @click.prevent="gotoPage(1)"
            >首</a>
            <a
              :class="{undisable: !data.hasPrevious}"
              href="#"
              title="前一页"
              @click.prevent="gotoPage(data.current-1)"
            >&lt;</a>
            <a
              v-for="page in data.pages"
              :key="page"
              :class="{current: data.current == page, undisable: data.current == page}"
              :title="'第'+page+'页'"
              href="#"
              @click.prevent="gotoPage(page)"
            >{{ page }}</a>
            <a
              :class="{undisable: !data.hasNext}"
              href="#"
              title="后一页"
              @click.prevent="gotoPage(data.current+1)"
            >&gt;</a>
            <a
              :class="{undisable: !data.hasNext}"
              href="#"
              title="末页"
              @click.prevent="gotoPage(data.pages)"
            >末</a>
            <div class="clear"></div>
          </div>
        </div>
        <!-- 公共分页 结束 -->
      </section>
    </section>
    <!-- /课程列表 结束 -->
  </div>
</template>
<script>
import course from '@/api/course';
import subject from '@/api/subject';

export default {
  data(){
    return {
      page: 1,
      data: {},
      oneTypeIdx: -1,
      twoTypeIdx: -1,
      subjectNestedList: [], // 一级分类列表
      subSubjectList: [], // 二级分类列表
      searchObj: {}, // 查询表单对象
      oneIndex: -1,
      twoIndex: -1,
      buyCountSort: "",
      gmtCreateSort: "",
      priceSort: ""
    }
  },
  created(){
    console.log("课程页面")
    console.log(this.$route.params)
    if(Object.keys(this.$route.params).length != 0){
      this.data=this.$route.params.data
      console.log('当前页面data')
      console.log(this.data)
      this.getAllSubjectInfo(false)
    }else{
      this.getCoursePageVo()
      this.getAllSubjectInfo(true)
    }
    
  },
  mounted(){
    console.log("课程页面")
    console.log(this.$route.params)
    if(Object.keys(this.$route.params).length != 0){
      this.data=this.$route.params.data
      console.log('当前页面data')
      console.log(this.data)
      this.getAllSubjectInfo(false)
    }else{
      this.getCoursePageVo()
      this.getAllSubjectInfo(true)
    }
    
  },
  methods: {
    // 分页查询所有课程信息
    getCoursePageVo(){
      this.searchObj = {}
      this.subSubjectList= []
      course.getCourseApiPageVo(this.page, 8, this.searchObj).then(response => {
        console.log(response.data.data);
        this.data = response.data.data;
      })
    },
    gotoPage(page = 1){
      console.log(page+' gotoPage '+this.data.pages)
      //存在bug
      course.getCourseApiPageVo(page, 8, this.searchObj).then(response => {
        this.data= response.data.data
      })
    },
    // 初始化一级分类
    getAllSubjectInfo(isSort){
      subject.getAllSubject().then(response => {
        this.subjectNestedList = response.data.data.allSubject;
        console.log(this.subjectNestedList);
        if(isSort)
        this.sortBuyCount()
      })
    },
    // 初始化二级分类
    getTwoByOneId(oneId){
      // 根据选中一级分类查询课程列表
      this.searchObj.subjectParentId = oneId;
      this.searchObj.subjectId = '';
      this.subSubjectList = [];
      this.gotoPage(); //刷新对应一级类别信息
      // 初始化二级
      for(let i=0;i<this.subjectNestedList.length;i++){
        let oneSubject = this.subjectNestedList[i];
        if(oneSubject.id === oneId){
          this.subSubjectList = oneSubject.children;
        }
      }
    },
    // 根据二级id查询数据
    getCourseByTwoId(twoId){
      this.searchObj.subjectId = twoId;
      this.gotoPage();
    },
    //排序
    sortBuyCount(){
      this.buyCountSort= '1'
      this.gmtCreateSort= ''
      this.priceSort= ''
      this.searchObj.buyCountSort= this.buyCountSort
      this.searchObj.gmtCreateSort= this.gmtCreateSort
      this.searchObj.priceSort= this.priceSort
      this.gotoPage()
    },
    sortGmtCreate(){
      this.buyCountSort= ''
      this.gmtCreateSort= '1'
      this.priceSort= ''
      this.searchObj.buyCountSort= this.buyCountSort
      this.searchObj.gmtCreateSort= this.gmtCreateSort
      this.searchObj.priceSort= this.priceSort
      this.gotoPage()
    },
    sortPrice(){
      this.buyCountSort= ''
      this.gmtCreateSort= ''
      this.priceSort= '1'
      this.searchObj.buyCountSort= this.buyCountSort
      this.searchObj.gmtCreateSort= this.gmtCreateSort
      this.searchObj.priceSort= this.priceSort
      this.gotoPage()
    }
  }
};
</script>